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avcodec/hevcpred_template: also initialize top[-1] for constrained intra prediction

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Fixes out of array read
Fixes: 387713a12dc5cfa27fcb4178084ce1ea-asan_stack-oob_131176a_1182_cov_3861068719_CAINIT_C_SHARP_3.bit
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-03-02 21:17:48 +01:00
parent 8b8ae298af
commit dfefc9097e
1 changed files with 1 additions and 0 deletions
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libavcodec/hevcpred_template.c
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@ -155,6 +155,7 @@ static void FUNC(intra_pred)(HEVCContext *s, int x0, int y0, int log2_size, int
left[i] = 128;
top[i] = 128;
}
top[-1] = 128;
}
if (cand_bottom_left) {
for (i = size + bottom_left_size; i < (size << 1); i++)